[Llvm-bgq-discuss] bgclang r188569-20130816 on vesta/mira

Hal Finkel hfinkel at anl.gov
Tue Aug 20 14:58:36 CDT 2013


Hi again,

I've updated the current install again. The change is only to the bgclang wrapper script; we needed to do a better job of disabling the new SLP vectorizer (I'm observing miscompiles).

[begin background]
LLVM currently has two SLP (superword-level parallelism, a.k.a. basic block) autovectorization passes. The first, which we now call the "aggressive" pass, was authored by yours truly, and we've had it for a while now. There is also a new SLP vectorizer, which should be less compile-time intensive, but currently still seems to have some problems.
[end background]

A -v3 archive is on the trac page for those maintaining independent installs.

 -Hal

----- Original Message -----
> Hello everyone,
> 
> The current install has just been patched to fix a small bug dealing
> with explicitly passing vector2double variables as function
> parameters.
> 
> A -v2 archive is on the trac page for those maintaining independent
> installs.
> 
>  -Hal
> 
> ----- Original Message -----
> > Hello everyone,
> > 
> > I've updated the install on vesta/mira to r188569-20130816. This
> > grabs an upstream bugfix and a local fix (to a problem reported by
> > Jeff when compiling GSL).
> > 
> > As usual, for those maintaining independent installs, an updated
> > archive is on: http://trac.alcf.anl.gov/projects/llvm-bgq
> > 
> >  -Hal
> > 
> > --
> > Hal Finkel
> > Assistant Computational Scientist
> > Leadership Computing Facility
> > Argonne National Laboratory
> > _______________________________________________
> > llvm-bgq-discuss mailing list
> > llvm-bgq-discuss at lists.alcf.anl.gov
> > https://lists.alcf.anl.gov/mailman/listinfo/llvm-bgq-discuss
> > _______________________________________________
> > llvm-bgq-discuss mailing list
> > llvm-bgq-discuss at lists.alcf.anl.gov
> > https://lists.alcf.anl.gov/mailman/listinfo/llvm-bgq-discuss
> 
> --
> Hal Finkel
> Assistant Computational Scientist
> Leadership Computing Facility
> Argonne National Laboratory
> _______________________________________________
> llvm-bgq-discuss mailing list
> llvm-bgq-discuss at lists.alcf.anl.gov
> https://lists.alcf.anl.gov/mailman/listinfo/llvm-bgq-discuss
> 

-- 
Hal Finkel
Assistant Computational Scientist
Leadership Computing Facility
Argonne National Laboratory


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